Version 1.0: (January 2014)
Fixed bugs and improved. Save all and close the opened images in the selected folder. This plugin can work with a stack from a sequence of images too. If the input is a stack of images, the plugin creates its Z projection with the maximun intensity and separates all slices, to save them in the selected folder.

Download SaveAll_.jar to the plugins folder, or subfolder, restart ImageJ / Fiji or refresh menu (Help → 'Refresh Menu') , and there will be a new “SaveAllImages” command in the Plugins menu, or submenu.

Version 0.1: (This plugin can work with a stack from a sequence of images)

Download Save_All.jar to the plugins folder, or subfolder, restart ImageJ / Fiji or refresh menu (Help → 'Refresh Menu') , and there will be a new “Save All” command in the Plugins menu, or submenu.

Version 0.0: (Save all and close the opened images in the selected folder)